Resumen

CANETE S, Oscar  y  ARANGUIZ L, Fabiola. Electrophysiology and electroacoustic study of spectrum disorder of auditory neuropathy: Report of a case in high-risk newborn. Rev. Otorrinolaringol. Cir. Cabeza Cuello [online]. 2011, vol.71, n.1, pp. 57-64. ISSN 0718-4816.  http://dx.doi.org/10.4067/S0718-48162011000100009.

Auditory neuropathy spectrum disorder (ANSD) describes a condition in which it is possible to find otoacoustic emissions (OAE) in presence of abnormal or absent auditory brainstem evoked potentials (ABR). The pure tone thresholds may show a spectrum from normal to profound hearing loss. Speech recognition is often affected in presence of background noise, but in some individuals remains intact. We report a case of a pre term newborn (female) of 29 weeks and 810 grams, Apgar 7/8, bronchopulmonary dysplasia, suspected connatal infection, and hyperbilirubinemia (max 11 mg / dl). She was referred to Hospital Padre Hurtado for hearing assessment. The hearing test performed were an ABR, tympanometry & acoustic reflex, visual reinforcement audiometry and otoacoustic emissions. The results are consistent with those described in the literature for ANSD.

Palabras llave : Auditory neuropathy; Auditory neuropathy spectrum disorder; auditory evoked potentials; cochlear microphonic.